CT Bed Two-Stage Sliding Mechanism for Vibration Control

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing X-ray computed tomography (CT) systems face challenges in reducing vibration of the table top during insertion into the bore, which affects image fineness, and there is a need for vertical lifting of the table top relative to the floor surface to improve throughput and alignment.

Innovation Solution

A two-stage sliding-type bed mechanism that independently moves the table top and support frame, allowing vertical lifting interlocked with horizontal movement to minimize vibration and enhance alignment, with processing circuitry determining optimal lift routes based on scan conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the table top is vertically lifted relative to the floor surface, then throughput is improved, but vibration of the table top increases during insertion into the bore

Engineering Contradiction:

ImprovethroughputVSAvoidvibration of the table top

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The bed mechanism is divided into two independent sliding stages: the table top can slide independently on the support frame, and the support frame can slide independently on the base. This segmentation allows the table top to be moved horizontally into the bore separately from the vertical lifting motion of the support frame, thereby reducing vibration during insertion while maintaining high throughput

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system employs dynamic control of the two-stage sliding mechanism, where the table top and support frame can move in coordinated sequences. The table top is first lifted vertically by the support frame, then slid horizontally into the bore, allowing optimization of motion paths to minimize vibration while maximizing throughput

Inventive Principle:

Principle #15Dynamics

2Productivity

If the support frame moves forward to the gantry, then throughput is improved, but the table top alignment relative to the floor surface deteriorates

Engineering Contradiction:

ImprovethroughputVSAvoidtable top alignment

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The alignment function is segmented between two components: the support frame provides vertical alignment relative to the floor surface, while the table top provides horizontal positioning into the bore. This allows the support frame to move forward to the gantry for high throughput while the table top independently maintains precise alignment

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The table top acts as an intermediary between the support frame and the bore. It receives the support frame's forward movement and translates it into precise horizontal insertion, mediating between the need for high throughput (support frame movement) and precise alignment (table top positioning)

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10765395B2Medical imaging diagnosis apparatus and scan planning device

Publication Date: 2020.09.08 CANON MEDICAL SYST CORP

AI summary

One embodiment, a medical imaging diagnosis apparatus includes a gantry, a bed and a processing circuitry. The gantry acquires data. The bed supports a table top such that the table top is horizontally and vertically movable relative to a floor surface. The processing circuitry determines a lift route of the table top from an initial height to a target height to be either a first route or a second route. The first route is in which the table top is vertically lifted relative to the floor surface from the initial height to the target height. The second route is in which the table top is vertically lifted, while being horizontally moved, relative to the floor surface from the initial height to the target height.